Guard for hooks



F. E. ABBOTT. GUARD FOR HOOKS- APPLICATION FILED FEB. 2|. 192 1-Patented Apr. 4, 1922.

/ RAN/f [T 2955077;

attain/e 1 s w ww UNITED STATES FRANK E. ABBOTT, or coanmeiig camronma.

GUARD r03 nooks.

Specification of Letters I atent.

latontcd Apr. 4, 1922.

Application filed. February -21, 1921. Serial No. 446,633.

7'0 all whom it may concern:

Be it known that I, FRANK E. ABBOTT, a citizen of the United States,residing at Coalinga, in the county of Fresno and State of California,have invented certain new and useful Improvements in Guards for Hooks,of which the following is a specification, reference being had thereinto the accompanying drawings.

This invention relates to guards for hooks of the type frequentlyemployed on cranes, derricks and the like for lifting heavy objects. Theobject of the invention is to provide a guard which will prevent theaccidental disengagement from the hook, of the object engaged therewith,such, for example, as the link of a chain, a loop in a rope or any otherelement which supports the object to be lifted.

Further objects and advantages of the invention will be set forth in thedetailed description which follows.

The figure shown in the accompanying drawing is a side elevation of ahook having the invention applied thereto with certain of the parts insection.

Referring to the drawing 5 designates a" hook which is of a usualandknown formation except that it has a transverse opening 6 formedtherethrough adjacent the point thereof.

The guard comprises a yoke consisting of the side bars 7 and 8 pivotallyconnected to the body of the hook 5 by a bolt 9. A

coil spring 10 is connected with the yoke as at 11 and has a bightportion 12 engaged in a slot 13 formed in the body of the hook and thisspring tends to throw the guard to the dotted line position illustratedin the drawing. The side bars 7 and 8 are united by a block 1 1 at theirouter ends and this block is recessed at 15 for the reception of aspring 16 which surrounds latch 17. Thisv spring bears between a pin 18carried by the latch and a plug .19 which is threaded into the outer endof the recess 15 and through which the latch 17 slides. The latch 17 isprovided with a finger grasp or head 20 upon its outer end by which itmay be-drawn outwardly against the tension of the spring 16 torelease'the latch from the opening 6. The lower face of the latch isrounded at 21 to adapt it to coact with the rounded end 22 of the hookto force the latch. 17 outwardly,

when the yoke is swung downwardly. Whenv this downward movement hascontinued far enough, the latch will snapinto the openmg 6.

Among the advantages present in this structure over any otherdevice ofthis nature with which I am familiar are these:

First: The parts are so related that when the guard is swung to. thedotted line position shown in the drawing, the mouth or throat of thehook is entirely unobstructed and the chain link or other element to beengaged with the hook may be freely entered into the opening of the hookwithout contact with or interference by the guard Second: All of thelatch mechanism is carried by the guard, none of it is carried by thenose of the hook. The hook is of the usual formation except for thepresence of the opening 6; consequently there is no possibility that anyof the latch mechanism will 3e battered out of shape by accidentalengagement with heavy chain links or the like. Theinclination of thepoint ofthe hook is such that the entrance to the opening 6 is protectedand thus the part of the opening with which the latch 17 engages is maintained in good condition...

It is to be understood that the invention 1 is not limited to theprecise construction set forth but that it includes within its purviewwhatever changes fairly come within either the terms or the spirit ofthe appended claims.

Having described my invention, what I claim is: j

1. A lifting hook having an opening therein adjacent its point andextending from the outer face of said point inwardly, a guard pivotedfor swinging movement to the body'of the hook substantially oppositesaid point and comprising a yokeadapted to embrace the point of thehook, a spring actuated latch operable longitudinally of the yoke andadapted to snap into the openingof the hook and means tending to throwsaid yoke upwardly, saidyoke straddling the body of the hook and lyingentirely outside of the throat thereof when in its upper position.

2. In combination with a lifting hook having an opening formed thereinadjacent its point and extending from its outer face in:

sisting of a pair of sidebars and atransversefolement, saifl yokestraddling saiii hook and being pivoted thereto at the rear side of thehook and ate point substantially opand ten vated position and a s ri nga ctuet ed latch movable longitudinll-il member and adapted to srii iinto the open- 10 in of the hook. I

linteetimony whemoi I hereunto afiix my signature.

FRANK E. ABBOTT.

